Holding device



FIG. 1 is a perspective view of a holding device showing my new design;

FIG. 2 is an elevational view thereof, the side opposite that shown in FIG. 2 being identical thereto;

FIG. 3 is a view from the top of FIG. 2;

FIG. 4 is a view from the right side of FIG. 2, the view from the left side of FIG. 2 being identical thereto; and,

FIG. 5 is a view from the bottom of FIG. 2. 

The ornamental design for a holding device, as shown and described. 